Compress.



I 7 1 9 n m 1 H W s m 8 A m D "A E v T f N E M P a 0 w E 9 1 m n B U BTv mm 1. m W DW F I 0 R v A O I L P P A 3 2 MM 3 8 m M N THE mamasPETERS cm. WASHINGTON. Lacv UNITED STATES PATENT OFFICE.

ROBERT D. WEBB, OF MINDEN, LOUTSIANA.

COMPRESS.

Application filed June 9,1903. Serial No. 160.727.

To all whom it may concern:

Be it known that I, RoBER'r D. WEBB, a citizen of the United States,residing at Minden, in the parish of Webster and State of Louisiana,have invented certain new and useful Improvements in compresses, ofwhich the following is a specification. I

My invention relates to compresses and consists in an arrangement ofparts whereby to secure a comparatively rapid initial movement of themovable platen and a slower movement with the application of a greatlyincreased lifting force as the platen approaches its terminal position,as fully set forth hereinafter and as illustrated in the accompanyingdrawing, in which Figure 1 is an elevation illustrating a compress withmy improvements, the movable platen in its position furthest from thefixed platen; Fig. 2, the same, showing the parts in another position;Fig. 3, a side view of the press; Fig. 4, a detached part sectional viewshowing one of the lifting levers, and part of the lifting rods.

The base A and elevated cylinder D are connected by an intermediateframe having posts 1, 1, cross pieces 2, columns 3, with guides 1 uponthe posts 1 for guiding the lower or movable platen B, the upper orfixed platen 0 being supported by the cross pieces 2.

The cylinder D has the usual piston, piston rod 5 and cross head 6, thelatter guided in the columns 3, and if desired, braces 7, 7 may be usedto support the more elevated parts of the structure.

In bearings of the cross pieces 2 turn the trunnions 8 of lifting leversE, each of which-preferably consists of a bar having a cylindrical orrounded outer end 10 which is engaged by the concave or hooked end of alifting rod G, each of which swings at its lower end upon a pin 12projecting from one side of the platen B near the lower end thereof, thesaid pin extending beyond the rod G and having a flat face bearing uponthe guide 4. There are therefore two lifting levers at each side of thepress and two lifting rods engaging said levers. In order to permit thelifting levers to swing properly inward when the platen B is raised,each of the levers is cut away at the outer side, forming a recess intowhich the rod G passes, as best shown in Fig. 4.

The lifting levers are caused to swing about the axes of their trunnions8 through the medium of connections operated by the piston rod so as tosecure a comparatively quick lifting movement of the platen B at thebeginning of the operation and a slower movement with a greatlyincreasing leverage which secures a great pressure as the movementsapproach completion.

To this end, arms H connected at their upper ends to the cross head 6carry at their lower ends a cross pin 15 to which is also jointed theouter end of connecting arms or radius arms I, the inner end of each ofwhich swings upon a stationary pin 16 supported by the cross pieces 2,and each link I is jointed at the outer end to Specification of LettersPatent.

Patented Aug. 6, 1907.

a pin 17 connecting the outer end of the adjacent lever E with thelifting rod G.

As shown in Fig. 3, the radius arm I is central with the arms H H onopposite sides of the same, and the levers E outside of the links J, butit will be evident that this arrangement may be varied without departing from the main features of my invention. Whatever may be thearrangement in this respect, the parts are so connected with the upperends of the rods G G, and the latter are so separated that the pressoperators can get access to the compressed bale between the platens andat the ends of the same to sew the bagging while the bale is in itscompressed state.

In Fig. 1, the parts are shown in'the position which they occupy whenthe movable platen is in its lowest position adapted to receive aplantation bale.

After placing the plantation bale upon the platen B, the piston beginsto rise, drawing upward upon the arms H and carrying each pin 15 in acurve corresponding to a circle, the center of which is the axis of thepin 16. The first portion of the upward movement will lift the pin 15and the outer end of the levers E with comparative rapidity, but as thepins 17 are carried in a curve y having the axes of the trunnions 8 forthe center, the speed of the lifting movement gradually decreases withan increasing leverage between the levers E and lifting rods G. There isalso an increasing leverage tending to thrust inward the levers E andlift the rods G, owing to the fact that each connecting pin 15 as itmoves upward will cross the path y of the pins 17 and take a positionoutside of the latter, as shown in Fig. 2, and the links I will exert anincreasing leverage to thrust inward the lever E as the links arecarried more nearly parallelto the arms I until the pin 15 crosses are yand then the pushing power of arm J to force the lever E inwarddecreases.

It will, of course, be evident that any suitable connections may beused' for operating the radius arms from the engine.

Without limiting myself to the construction and arrangement of partsshown, I claim:

1. The combination with the fixed and movable platens of a press andwith the operating engine, of radius arms and lifting levers eachpivoted at the inner end above the fixed platen and extending outwardly,a link connecting the outer end of each radius arm with the outer end ofeach lever, lifting rods each connected with the movable platen and alsowith a link and lifting lever at the pivotal connection thereof, andconnections between the engine and the outer end of each radius arm,substantially as set forth.

2. The combination with the fixed and movable platens of a press andwith the operating engine, of radius arms pivoted at their inner endsabove the fixed platen and extending outwardly, a pair of lifting leversat each side of the press, pivoted at their inner ends above the fixedplaten and extending outwardly, a cross pin connecting the outer ends ofeach pair of lifting levers, a pair of links connected with said crosspin at one end and at the other with the outer end of the adjacentradius arm, and a pair of separated lifting rods at each side of thepress pivoted to the movable platen and to the outer ends of the liftinglevers; substantially as set forth The combination with the fixed andmovable platens of a press and with the operating engine, of radius armspivoted at their inner ends above the fixed platen and extendingoutwardly, a pair of lifting levers at each side oi? the press, pivotedat their inner ends above the fixed platen and extending outwardly, across pin connecting the outer ends 01. each pair of lifting levers, apair of links connected with said cross pin at one end and at the otherwith the outer end of the adjacent radius arm, and a pair of separatedlifting rods at each side of the press pivoted to the movable platen andto the outer ends of the lifting 15 levers, the lifting levers recessedat the outer sides to receive the lifting rods as the two are broughtapproximately parallel, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses. 20

Witnesses W. M. MONTGOMERY,

